Plan a card debt elimination strategy with realistic timeline and cost estimates.
Overview
Credit card debt is costly because high APR compounds monthly.
This calculator estimates payoff duration under fixed payment assumptions.
It helps show how small payment increases can save major interest.
Use it to move from revolving debt to a clear debt-free date.
Steps
Use current statement principal owed.
Input annual card interest rate.
Use planned recurring payment amount.
Review months to debt-free and total interest.
Test faster payoff options.
Math
n = -ln(1 - rP/PMT) / ln(1+r)
This amortization rearrangement solves number of months needed to clear a balance at fixed payment.
Worked cases
Solve n using monthly rate and payment.
Payoff takes roughly 33 months with notable interest cost.
Increase PMT and recompute n.
Payoff accelerates and total interest drops significantly.
Lower r with same balance and payment.
Lower APR shortens timeline and cuts interest burden.
Why use this
Questions